Your mileage is not all that bad compared to some Sport Trac’s, however it’s important to not that all mileage figures give for any vehicle are usually qualified with the words “Your mileage may varyâ€.
There are many reasons why your mileage may vary. Some you can do something about, and many others you cannot.
What you can do to help your gas mileage:
1. Driving habits. Don’t use jackrabbit starts and then jam on the brakes for the next traffic light.
2. Reduce friction and roll-resistancve: Keep your engine in tune, filters clean and your tires inflated properly, and use the thinnest oil that is compatible with your engine. Synthetics are best in the engine, transmission, and rear axle.
3. Reduce the weight. If you carry a lot of junk in your truck or the bed, clean it out. Carrying extra weight requires more HP and gas to accelerate and maintain a constant speed.
4. Avoid traffic jams by driving at odd hours when possible. I find that leaving on a trip at 11:00 or 12:00 at night and driving all night when there is little or no traffic on the road allows me to maintain my cruising speed for hours without having to touch the brake.
What you cannot control:
1. Heavy Traffic. Especially if you live and work in or near a large city. The Sport Trac is heavy and will use significantly more gas going from traffic light to traffic light than cruising down the highway. The more times you have to slow down and speed up, the more gas you will burn
2. Terrain: Hilly country eats more gas and going up hill eats more gas than you save when going down hill.
3. Weather: Rain, snow, and temperature extremes are not good for maximum mileage
Things that can help but cost extra include, free flow exhaust, intakes, and tuner modules. Most are designed to produce more HP, but if you use them wisely you can improve your MPG. These items tend to be much more expensive and their expense may not offset or justify the gas savings.